摘要
以跨栏动作技术为例,分析采用影像测量手段时,人工判读误差对分析结果的影响。结果表明,在能够被清楚拍摄到的前提下,各身体标志点都能获得可靠的分析结果;三维重构后垂直方向解析精度略高于其他方向;位移参数的解析精度能够满足研究要求,而角速度参数可靠性较差;数据平滑对某些参数的影响较大。
Depending on hurdle movements as the study case, the research analyzes the influence of manual digitizing error on analysis results. The result shows that under the premise of clearly visible for cameras, all the body landmarks can obtain reliable result. After 3 D reconstruction, the vertical direction is slightly less variable than the other directions. Additionally, the precision of linear displacement can match the analysis requirement, while angular velocity displays poor reliability no way. Some of the parameters, is greatly influenced by data smoothing.
出处
《成都体育学院学报》
CSSCI
北大核心
2014年第7期59-62,共4页
Journal of Chengdu Sport University
关键词
误差
动作技术
量化分析
最小标准差
error
motion analysis
quantitative analysis
minimum standard deviation
